Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
220023goodexcellent21excellent
210025goodexcellent11excellent
200016goodexcellent11excellent
190012excellentexcellent11excellent
18008excellentexcellent11excellent
17006excellentexcellent11excellent
16005excellentexcellent11excellent
15005excellentexcellent11excellent
14004excellentexcellent11excellent
13009excellentexcellent11excellent
12004excellentexcellent11excellent
11002excellentexcellent11excellent
10002excellentexcellent11excellent
09003excellentexcellent11excellent
08008excellentexcellent21excellent
070017goodexcellent31excellent
060037lightly pollutedexcellent61excellent
050029goodexcellent51excellent
040031goodexcellent51excellent
030032goodexcellent61excellent
020032goodexcellent51excellent
010031goodexcellent51excellent
000030goodexcellent61excellent
230027goodexcellent51excellent